Equalizing-gearing.



N0.s41,774. PATENTED JAN.'22,1907.

v VA. A. FULLER,

- BQUALIZING GEARING.

APPLIGAT-ION FILED MAR. 22, 1906.

2 SHEETS-SHEET l` f2? Effi wann tez www; A 4 Zlv No. 841,774. PATENTED JAN. 22, 1907. A. A. FULLER.

EQUALIZING GEARING.

APPLIOATIO FILED MAR-22, 1906.

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A gndenoz UNITED sTATEs APATENT oEErcE.

ARTHUR AMES FULLER, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO PROVIDENCE ENGINEERING UCE, RHODE ISLAND,

EQUALIZINGl-GEAFHNG= Specification of Letters PatentA Patented Jan. 22, 1907.

Application iled March 22I 1906. Serial No. 307,606.

To a/ZZ whom t may concern:

Be it known that I, ARTHUR AMEs FULLER, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Equalizing- Gearing, of which the following is a specification, reference beingy had therein to the accompanying drawings.

. This invention has for its object to produce an equalizing or compensating gear adapted for use as part of the driving mechanism of an automobile (though not limited to such use) and contains features of novelty and superiority to be hereinafter pointed out.

In the accompanying drawings, Figure 1 is a central section view of an equalizing-gearin@ embodying my improvements. Fig. 2 is a 'ace or end view. Fig. 3 is a section taken on line 3 3 of Fig. 1. Fig. 4 is a sectional view of the casing, taken on line 4 4 of Fig. 2.

Fig. 5 is an elevation of one of the spindles` that serves as a support fora pinion of the gearing. Fig. 6 is an elevation of one of the face-plates o the casing detached. In the accompanyingdrawings, 2 3 indicate two shafts arranged in alinement and end to end. The adjacent ends of these shafts, and the'train of gearing which connects them and which also is employed to connect each of them with the power-shaft 20, are mounted within a casing (indicated as a whole by 21) that is loosely supported by the alining shafts and is free to revolve relative thereto.

4 5 indicate gear-wheels secured, respectively, to the ends of the shafts2 and 3.

The casing 21 comprises two end plates 6 7 and a peripheral rim 8, extending between the plates. Preferably the rim 8 1s formed integral with the plate 6, and the latter is provided with a iiange 9, extending outward beyond the rim and arranged to have secured hereto a gear-ring 10, with which meshes a pinion 18 on the shaft 20. The gear-ring 10 is secured to the iiange or rim 9 by screwbolts 11, passing through apertures 12 in the nim-ilange. This permits the` removal and 1eplacement of the gear member 10 should t become worn or broken. The opposite nd wall or plate 7 is separable from the rim although when the casing is assembled it is held against its edge by the screw bolts and nuts 16.

As the spindles 13, upon which parts of the power transmitting gearing are mounted, are seated in the opposite end plates or walls 6 7, it has been found desirable to so connect these plates that there shall be no danger of one rotating relative to the other about the shafts 2 3, even to the slightest degree, as

such movements would tend to throw the gearing out of proper alinement and cause destructive wear and excessive friction. I therefore construct the elements of the casing so that the separable end wall or plate 7 has an interlocking engagement with the other wall or end plate when the parts ofthe casing are assembled. This I provide by notching the peripheral edge of the plate, so as to form projections 17, which are arranged to fit correspondingly-shaped recesses in the edge of the peripheral rim 8. These interlocking devices serve to insure the holding of the end walls of the casing in their proper predetermined relative positions-that is, they prevent a rotative movement of one relative to the other-thus preventing any torsion on the spindles or turning of them out of lines parallel to the axis of themain shafts. To attain this, dependence cannot be placed alone upon bolts, as is done in earlier constructions with which I am acuainted, wherein bolts have been used both or transverse clamping of the end walls together and for preventing them from turning one relative to the other. The interlocking devices are fitted with the utmost nicety, so that the transverse-bolts are relieved from all torsional or twisting strains and are depended on only for clamping together the two end walls.

The mechanism as an entirety is compact and reduced to the utmost possible extent on lines radial from the main axis, as the trans- 'verse clamping devices (the through-bolts) are arranged in the free spaces between the pinions and at radial distances from the main axis less than the radius of the circle de` .scribed by the outermost parts of the pinlons.

The spindles 13, which, as stated, are mounted in the end walls of the casing, are arranged in` pairs, as indicated in Fig. 2.

IOO

secured to the shafts, as is common in this type of gearing. In order to maintain the pinions m proper working positions, the spindles on which they are mounted are provided with enlargements 14 situated intermediate the ends of the spindles, each enlargement being arranged between the pinion and one wall or side of the casing. It will be evident that the spindles 13, with their enlargements, must be oppositely arrangedthat is, the enlargement on one spindle of a pair must be next the wall 7, and that of the other spindle cf the pair next the wall 8, and this is illustrated in the drawings. The enlargements 14 not only serve to hold the pinions 15 in position, but they also constitute bearings or abutments that rest against the inner faces of the end walls of the casing, thereby assisting in fastening the spindles in place, for, as indicated in the drawings, the ends of the spindles next the enlargements 14, after being seated in apertures in the casing-walls, are upset or expanded, as indicated at 19. The opposite ends of the spindles fit into apertures formed therefor in the casing and are separable therefrom to permit the opening of the casing and its easy assembling, as circumstances may require. v

In practice it is found desirable to use several pairs (three being shown in the drawings) of pinions 15, as this number balances the gearing and causes smooth and easy running. y

I am aware that gearing of the class to which my invention belongs has been heretofore constructed in which it has been proposed to make use of spindles passing through the two end walls of the casing and having pinions mounted thereupon; but in the earlier constructions within my knowledge the pinions have each had upon one of its sides and extending laterally therefrom and integral therewith a hub or sleeve surrounding the spindle and rotating with the pinion. n my construction the part at 14 is integral with the spindle and does not rotate with the the outer porl pinion. This enlargement constitutes an abutment of considerable area for the inner face of the casing-wall, which is adjacent thereto and against which the wall is tightly fitted when the end of the spindle is upset or riveted. It, moreover, serves as a bracing device of relatively long radius to rigidly hold the spindle in the desired axial line.

That l claim is# 1. In an equaliZing-gearing, the combination of two alining shafts, a gear-wheel secured to each shaft, a casing surrounding said wheels, free to turn relative thereto and constituting a member through which power is transmitted and comprising an end wall 6 carrying a peripheral rim 8 and a flange or rim 9, and a separable end wall 7, pinions mounted in the said casing by which the said gear-wheels are connected, transverse bolts binding together the end walls of the casing and situated radially inside of the circles described by the outermost parts of the pinions, l'ocking devices supplemental to the transverse bolts interposed between the end walls of the casing and arranged to prevent rotative movement of one end wall relative to the other, and a gear-ring attached to the rim 9 of the casing, substantially as set forth.

2. In an equalizing-gearing, the combination of two alining shafts, a gear-wheel secured to each shaft, a casing 5 surrounding the wheels and comprising an end 'wall 6 formed with a peripheral rim 8 and a separable end wall 7, the latter end wall and the peripheral rim S having interlocking engagement to prevent rotative movement of one end wall relative to the other, pinions within the casing for connecting the aforesaid gearwheels, and transverse bolts supplemental to the interlocking devices binding together the end walls of the casing, the bolts being at a radial distance from the center of the gearing less than the radial distance of the circle described by the outermost parts of the pinions, substantially as set forth.

1n testimony whereof affix my signature in presence of two witnesses.

ARTHUR AMES FULLER.

Titnessesz HERBERT CRnAsY, FRANK L. VAUGHAN. 

